How do you return an array of string ids using a factory in MirageJS?

Question

In MirageJS I am trying to create a factory for a simple array model.

Current code

Here is my code:

  let server = new Server({
    models: {
      usertab: Model
    },

    factories: {
      usertab: Factory.extend( function(i) { return i } ),
    },

    seeds(server) {
      server.createList("tab", 3)
    },

    routes() {
      this.get("api/usertabs", (schema) => {
        return schema.usertabs.all()
      })
    }
    
})

Current result

The above code returns a list of objects with an id key under the usertabs key:

{ 
  usertabs: [
    {id: "1"},
    {id: "2"},
    {id: "3"},
  ]
}

Wanted Result

I want to seed the array with simple incrementing numbers so the return value when using GET api/usertabs will return:

["1","2","3"]

For some reason there is no api documentation for Factory only a guide. The only examples I could find are ones that create arrays of objects.

Answer 1

 this.get("api/usertabs", (schema) => {
        return schema.db.usertabs.map(item => item.id);
      })

will return an array in stead of an object containing an array. it is described in more detail here: https://miragejs.com/docs/main-concepts/database/